Hitachi-lg Data Storage, Inc.

Hitachi, Ltd.

Hitachi-lg Storage, Inc.

Nok Corporaiton

Hideyuki Onuma

Yoshiaki Yamauchi

Shinya Tsubota

Sojiro Kirihara

Kuniyuki Kimura

Seiji Hamaie

Makoto Ibe

Manabu Ochi

Atsushi Kajiya

Hiroyuki Toyoda

Nozomu Harada

Keiji Sasao

Kenya Tanimoto

Mitsukata Shizuya

A disk drive device has a configuration in which one of stepped parts defined by a circular recess for guiding a disc, formed in a disc tray is substantially flush with the bottom surface of the circular recess even in an area beyond the outer peripheral part of a disc so that no air cavity part facing the outer peripheral side surface of the disc is induced around the disc. Thereby, it is possible to aim at lowering cavity noise caused by the air cavity during high speed rotation and fluid noise caused by turbulence.

Disk drive device having air stream restrictive device

An optical disc apparatus, comprising: a traybeing provided to be movable between a first position where an optical disc can be loaded therein and a second position where information is readout from said optical disc loaded; and a housingsupporting said tray to be slidable, and including an electronic circuit board in a part thereof, wherein the tray mounts thereon various kinds of parts including a pickup, a disc motor, and a control portion for controlling them, and is electrically connected between the electronic circuit board of the housing through a flexible cable, which is provided under condition of being bent within the housing, wherein a reinforcing sheet shapedinto waveform at the end portion thereof for dispersing the stresses is adhered in a part of a bent region of the flexible cable, which moves accompanying with movement of the tray when the tray moves between the first position and the second position.

Optical disc apparatus and flexible cable used for the same

An optical disc apparatus has the following arrangements. Specifically, the optical disc apparatus includes a lock pin and a lock arm. The lock pin is disposed on a side of an inner surface of a case of the apparatus, being tapered in a protruding direction thereof. The lock arm is disposed on a side of a tray of the apparatus. The lock arm, urged by a resilient member, includes a hook portion to be engaged with an inclined surface of the lock pin. When the tray has moved to a predetermined position within the case, the lock arm is engaged with the lock pin, so that the tray is held in position at the predetermined position. When an impact force equal to, or more than, a predetermined value is applied to the optical disc apparatus, the hook portion of the lock arm is displaced in the protruding direction of the lock pin along the inclined surface of the lock pin, thereby disengaged from the lock pin. Engagement of the tray is thereby released.

Optical disc apparatus

In an optical disk apparatus, a feed motor for moving an optical pickup in approximately the radial direction of a disk is provided on a base, such as unit mechanism mounting member, that pivotally moves about a supporting point together with the optical pickup and a disk motor, and on the base, the feed motor is disposed at an outer circumferential position of the optical disk or at a position near the supporting point, in the projection region of the optical disk in its chucked condition.

Thin structured slot-in type optical disk apparatus

In an optical disk apparatus for recording and/or reading information with respect to an optical disk, comprising, a chassis for containing the optical disk, and a tray being movable with respect to the chassis and adapted to support the optical disk thereon so that the optical disk is movable with respect to the chassis, the chassis has an opening for discharging an air from an inside of the chassis to an outside of the chassis through the opening.

Optical disk apparatus with openings for discharging air from therein

An optical disk apparatus, enabling to reduce noises, the wind sounds generated due to rotation of a disk, with certainty, irrespective of an increase in rotation speed of the disk, comprises a disk motorfor rotating the optical diskloaded into an inside thereof, an optical pickupfor recording or reproducing information from or onto the optical disk rotated, and a trayfor loading the optical disk therein, wherein the tray has a flat surface, being nearly circular in the shape, on which the optical disk is disposed, and a peripheral portionformed surrounding a periphery thereof, and the peripheral portion is nearly equal to an upper surface of the optical disk, and further a distance from a tip portion of the optical disk to be loaded within the apparatus is equal to 1.8 mm or larger than that and equal to 4.0 mm or smaller than that, in particular, preferably it is equal to 2.0 mm or larger and equal to 2.7 mm or smaller.

Optical disk apparatus

In an optical disk drive device, in order to reduce structural vibration noise and aerodynamic sound during high-speed revolution, a recess is formed at the deeper end. This recess is in a position axially symmetric to a hole for the movement of an optical head with respect to the axis of a spindle motor, and its size is substantially equal to that of the movement hole. This recess serves to suppress the vibration mode of a disk tray and the air flow between the disk and the disk tray. Noise is reduced even when the disk is turning at high speed.

Growing community of inventors

Urayasu, Japan

Hideyuki Onuma